Question

function is defined by f(x) = 2 x - 5. Then f ( 7 ) is :

a) 19 b) 14 c) 9 d) None​

Answer 1

x=7

2x-5

2×7-5

14-5

9

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Answer 2

$\huge\tt\colorbox{gold}{Answer}$

f(x) = 2x - 5

substitute x = 7 to find f(7)

f(7) = 2(7) - 5

f(7) = 14 - 5

f (7) = 9

c) 9 is the correct answer..